5. linear Addressing

You need the mmap-2.2.3 driver installed on your system.
If you don't have the mmap-2.2.3 driver installed, you could use the driver
source in the file

xc/programs/Xserver/hw/xfree86/etc/mmapSVR3.shar

or

/usr/X11R6/lib/X11/etc/mmapSVR3.shar

Build and install the driver as instructed. You'll need the file
/usr/include/sys/mmap.h for compiling the X11R6/XFree86 source tree,
with linear addressing enabled.

The new loadable X Server is not tested to work without linear addressing.

Using ...

To use the linear address-mapping of the framebuffer you need the mmap Driver
by Thomas Wolfram (Version 2.2.3) installed in your Kernel.
If you have installed it, most servers will use linear addressing by default.
Others may require
setting the

Option "linear"

in your XF86Config. Check the appropriate manual pages for details.
Maybe you need also the MemBase specified in XF86Config. Please refer to the
appropriate README of your Card/Server, for
How to use...

I could only test these cards on Interactive UNIX

Spea/V7 Vega - clgd5428 - VLB - (old)

with 32MB MainMemory installed I couldn't use it.
My tests with different mappings into the address space
results in no Graphics displayed or a spontaneous reboot.

ATI GUP - mach32 - VLB - (old)

with 32MB MainMemory installed I could map the CardMemory
at MemBase 0x07c00000. I could work with all clients
until I try to activate a Motif 1.1.1 InputField inside a
Motif Client like Mosaic-2.4 or xplan. This results in a
crash of the XServer.

!!! You could work around this !!!

Expand your .Xdefaults with

*blinkRate: 0
*cursorPositionVisible: false

This bug seems to be fixed since 3.1.2, and therefore the
workaround is not needed anymore.

ELSA Winner 2000PRO/X Revision G

if you experience a Problem with this Card you could try to
use the older Chipset Driver instead "newmmio".